User might just execute one transaction/program but STAD might display many entries for that single transaction/program  each entryis a dialog step in SAP term. How many dialog-steps are displayed under a transaction/program is related to program/transaction design and how that transaction is executed.
Connections of the types TCP, ISO-on-TCP, UDP, ISO and S7 connection are configured in the SIMATIC Manager in NetPro. These connections are configured in the same way in STEP 7 (TIA Portal). In STEP 7 (TIA Portal) the S7 connections have to be configured in the Devices and Networks editor, in the Network view.
Re: S7 Edge Wi Fi connection issues. This seems to be a very common issue, specifically with wireless routers that support both the 2.4 GHz and 5 GHz bands. Go into the Advanced settings in the Wi-Fi menu of the phone, and look for Wi-Fi Frequency Band.