Strips come with a powerful adhesive to allow it to remain in place for its lifetime.
However, the adhesive is slow to set, meaning that generally, within the first 24 hours, you can move Strips with little effort. It is recommended to use dental floss to demount Strips when needed.
After the first 24 hours, you will need to carefully remove Strips from its mounted position to move it. Upon finding a new location where you will remount it, you will need to clean the surface and apply a new adhesive to the bottom of Strips. You then mount Strips in the same manner as you would if it were new.
During the mounting process, you should use the small adhesive to make it easy to move until you find the place you are happy with. You can then mark its place and expose the full-length adhesive before setting Strips in its permanent location.