If you signed for the aircraft, other time is PIC time. Whether you are in the seat or not, you are the person responsible for the aircraft. If you need this time just to meet the mins for an airline, remember this....meeting the mins and being competitive are two different beasts. Dont try to BS the interviewers. They do this for a living.
I had about 30 hours of PIC other time in my logbook. In my situation, for training purposes three or maybe four pilots were scheduled on the flight. Eventhough I only logged about 1.0 of primary seat time, the entire flight was PIC time. At no time was I relieved of command, therefore I logged 1.0 primary and the remainder was other.
Be able to quickly explain your entries. I suggest using an electronic logbook. Electronic logbooks are always neat. No white-out. No sloppy entries. The math in the columns always add up.
My interviewers liked the simplicity and neatness of the computer printouts of my mil and civilian logbooks.