STAR should have an entry near the bottom (to allow adding holidays above) that shows your normal hours (8:00-5:00 M, T W Th, F) and it show as its destination your day app. If you're using live answer you still need an app, that's the only thing STAR can point to...just build one with no recording and digit timeout to person or group. Then at bottom of STAR put in nite app as DEFAULT destination. Now STAR will search down the list for a match. If day matches it will go there. If no matchit will go to default. Last, need to point the trunk group or DID number you wish to control to the STAR app as its ring in destination (I usually put it as both day and night in case someone puts the system in night mode).