RMD

I work at a state University and i participate in a 403b plan and a voluntary investment plan (which includes both a Roth and a pre-tax component) sponsored by the employer. I just retired at the end of June and i am 73 yo. But i will be working part time for the rest of the year at the same University. I was told that i could continue to contribute to the VIP plan (not the 403b) as long as i am working. But, do i have to take RMD from either or both University sponsored plans (i.e. the 403b and the pretax portion of the VIP) when i am still working part time? If so, when do i have to take it (before 4/1/24)? Thanks