What's the noun for rotas? Here's the word you're looking for.
rota
(Britain) A schedule that allocates some task, responsibility or (rarely) privilege between a set of people according to a (possibly periodic) calendar.
“The project manager devised a thorough rota to ensure that all team members had specific time slots to work on their individual tasks, facilitating a smooth development process.”
“In the meantime a rota system came into operation whereby the children took turns to weed, water, and generally care for the seedling vegetables.”
“In rural areas this may also mean organising a rota so that he or she may attend services in the various villages that they serve.”
“The project manager devised a thorough rota to ensure that all team members had specific time slots to work on their individual tasks, facilitating a smooth development process.”
“In the meantime a rota system came into operation whereby the children took turns to weed, water, and generally care for the seedling vegetables.”
“In rural areas this may also mean organising a rota so that he or she may attend services in the various villages that they serve.”