Co-Location on Tape understanding.

I have tape library attached to DPM having 22 Slots. All these tapes are being used by each individual protection group (1 per protection group) as these were UN-managed, and now I enable Co-location. I have a confusion, how it will impact tape utilization. here is scnario:

I have 4 protection groups with a similar environment, so I am gonna optimize them to a single tape. But question is, as mentioned in this pic, all these 4 groups have 2 recovery goals = monthly and weekly. Now DPM will use 2 different tapes for 2 Goals ? or will these be write to a single tape?

Please guide....