That is doable (but not necessary) for those of us having a counterbalance loom. For a countermarche loom it can be very heavy. It is not always possible to find a helper the minute one needs it...
Also, it is not necessary. Bring the lease sticks forwards instead.
The position of the lease sticks has to be secured. Lease stick holders can be made to different degrees of sophistication - one easy way is to use common steel wire and string.