Resolve "Clarify lab repetition"

What does this mr do?

Makes the repetition scheme of labs a bit more intuitive

Screenshots

before

after

Does this MR meet the acceptance criteria?

• I have added a changelog entry to reflect the significant changes I made.
• Tests were created to test the feature.
• I have updated the documentation accordingly.
• I adhere to the style guide.

Closes #622 (closed)