Currently, all stock adjustment journals are available in the stock adjustment function in POS.
I've come across lots of scenarios where some journals are created only for using them in HQ and hence, business doesn't want such journals to be visible in POS or restrict user from selecting a particular journal in POS.
Administrator on 11/5/2022 3:30:54 AM
Thank you for the feature suggestion! We will monitor the votes and feedback here to determine its consideration and prioritization in our future releases. - Boyce Zhu, Principal Product Manager for Dynamics 365 Commerce