Recommendation
Now i'm going to introduce you how I always do in Prey-Isys raid.
There are 3 teams in Isys raid. red, yellow, and green. In Phase 1, red and yellow's primary objective is sanctum and garden. Green's job is intercept.
When raid starts, red and yellow need to clear garden first. After cleared gardens, red needs to do sanctum. Yellow needs to help red with sanctum also help green with intercept. For green in phase 1, you don't need to worry about anything but walking to the right.
In phase 2, red needs to clear garden first. Therefore, red walks to the left at begining of phase 2. Yellow walks to the right to enter Isys. Green walks to left after red enters garden. After cleared garden, red needs to go battleground. After the first round, red goes to Isys and yellow goes to battleground. Green still goes to Observatory. Normaly, red should killed Isys. If not, repeat the begining of the phase2.
When raid starts, red and yellow need to clear garden first. After cleared gardens, red needs to do sanctum. Yellow needs to help red with sanctum also help green with intercept. For green in phase 1, you don't need to worry about anything but walking to the right.
In phase 2, red needs to clear garden first. Therefore, red walks to the left at begining of phase 2. Yellow walks to the right to enter Isys. Green walks to left after red enters garden. After cleared garden, red needs to go battleground. After the first round, red goes to Isys and yellow goes to battleground. Green still goes to Observatory. Normaly, red should killed Isys. If not, repeat the begining of the phase2.