rotate
/ˈroʊˌteɪt/ /Brit rəʊˈteɪt/
verb
-tates; -tated; -tating
to move or turn in a circle [no obj]
to regularly change the person who does a particular job so that all the members of a group do it at different times [+ obj]
to regularly change the place or position of things or people so that each takes the place of another [+ obj]
[+ obj] :to regularly change (crops grown on one piece of land) to make sure the soil stays healthy