The bus lane should be treated similarly to a light rail track.

If you’re trying to get in the garage, wait outside of the bus lane (in the street) until it’s clear, and try to be in the bus lane as little as possible.

The same thing for coming out, don’t wait in the bus lane.

The reason for this is that busses are super long, and if you’re blocking it, the bus could then be blocking much more traffic behind it.

Also; these bus lanes are used for emergency and maintenance vehicles, so it’s extremely important to keep the clear.