Ryddegruppen følger laginndelingen.

Because Norwegian very often forms compound nouns by writing them as a single word.

• rydde = to tidy / clean up
• gruppen = the group

Together, ryddegruppen means something like the cleanup group or the cleaning group.

This is much more natural in Norwegian than writing two separate words. English often uses separate words where Norwegian prefers a compound.

The ending -en is the definite singular ending for many masculine nouns in Norwegian.

• en gruppe = a group
• gruppen = the group

So in ryddegruppen, the second part carries the definiteness, and the whole compound becomes definite:

• en ryddegruppe = a cleanup group
• ryddegruppen = the cleanup group

This is a very common pattern in Norwegian compounds.

følger is the present tense of følge.

• å følge = to follow
• følger = follows / is following

In this sentence, it means the group follows, goes by, or conforms to the team arrangement/division.

Because Norwegian verbs do not change according to the subject the way English verbs sometimes do.

In English, we say:

• I follow
• she follows

But in Norwegian, the present tense stays the same:

• jeg følger
• hun følger
• gruppen følger

So følger is the correct present-tense form no matter who or what the subject is.

This is another compound noun:

• lag = team
• inndeling = division, arrangement, grouping

Together, laginndeling means something like team division, team arrangement, or team grouping.

Then the definite ending is added:

• en laginndeling = a team division/grouping
• laginndelingen = the team division/grouping

So laginndelingen is written as one word because it is a compound noun, just like ryddegruppen.

Again, this is the definite singular ending.

• en inndeling = a division / arrangement
• inndelingen = the division / arrangement

When inndeling is the main part of the compound, it still takes the definite ending:

• laginndeling = team division/grouping
• laginndelingen = the team division/grouping

In Norwegian compounds, the last part usually determines the grammatical gender and the ending.

This is the normal Norwegian main clause word order:

subject + verb + object

• Ryddegruppen = subject
• følger = verb
• laginndelingen = object

So the sentence structure is very similar to English here:

• The cleaning group follows the team division

Nothing unusual is happening with the word order in this sentence.

It can be more abstract here.

Although følge can mean physically follow someone, it also often means:

• to follow a rule
• to follow a plan
• to go by
• to conform to

In this sentence, it most likely means that the cleanup group is organized according to or follows the team division/grouping, not that it is literally walking behind it.

Because Norwegian usually marks definiteness by adding an ending to the noun instead of using a separate article before it.

Compare:

• English: the group

• Norwegian: gruppen

• English: the team division
• Norwegian: laginndelingen

So the idea of the is built into gruppen and laginndelingen through the ending -en.

Most likely, yes. Lag can mean team, and in this context that is the most natural meaning.

Norwegian words can sometimes have more than one meaning depending on context, but in laginndelingen, a learner should probably understand it as the division into teams or the team grouping.

So the sentence is about how the cleanup group is arranged in relation to teams, not about layers or something physical.