是不是一般都需要pro-rata 对于分配不够或者iliquid asset? Mock A 1的第一道第四小题的道德：
- Recommendation 2: Ask all clients to sign a waiver stating they acknowledge that when trading illiquid shares, fair dealing will not be possible as allocation will be on a first-come, first-served basis. We want to ensure clients have full disclosure of our trade allocation process.
