Primary UOM

We have the following Setup for Item Code UOM,

In P4101 weight and measures setup as follows

in UOM Conversion Setup is as follows

now when we enter the Sales  Order as you can see below

we want to sell in Primary UOM (PCS) by default

but  it is taking the "CR" as we defined in "Shipping UOM" that we don't want to change,

is there any way to show the "Primary UOM" always in Order Line?

thanks