Everyone needs to sleep or has no time to be online. The correct parking is then extremely important to avoid unnecessary losses!
The base defense as well as the air defense has a much higher range to the front than to the back, so it is extremely important that you never park units to the right, left or behind the base when you plan to go offline or overnight.
It is best to park in front of a base directly in front of the wall with a maximum of 3 groups, one on the right, one on the left and one in the middle.
Have air defense or patriots with you at larger gatherings
If you want to park several groups in front of your base, make sure that you place either "Patriots" as defense or 1 group of Pantsir and best of all 1 group of VCLC to make sure that nobody will shoot away your outer groups with air units.
Tip: Patriots are only really effective from a group size of at least 20. If this is too many resources for you, just put 1 group Pantsir + 1 group VCLC so you have planes and helicopters covered.