Another option is to use it with Rizful cloud node as you can see in Step 1 - point B. Also more details in a previous guide: #904362 using Zeus POS + Rizful NWC. The same you can create sub-accounts in Rizful and configure them in multiple Zeus POS. That Rizful node being very reliable and always online 24/7 and you manage the liquidity from its web interface to connect a full access NWC account in your manager Zeus app.