Wait Until w/o entity

Is there possibility to use Wait Until node triggered by flow variable instead of entity?
In addition can anybody explain or point me to docs to understand how Entity Location feature exactly works? It can be found in various nodes, but tbh it’s not always clear to me how to use it. in the instance it can be switched to flow which could be usable for me (if works)

Definitely I need to use Wait Until -like functionality to delay forwarding of most recent object (incoming with some period) till the moment I want (triggered irregularly/on demand)

thx in advance

In this example, I use the node to “wait until” my velux window is closed.
The information for the “wait until” is given by the change node.
Regarding the other question, and the Entity Location, not sure. Have you looked at the documentation from Kermit?

[{"id":"cc6c40f8.9d312","type":"ha-wait-until","z":"33b1225f.3b50ee","name":"Until","server":"d28c9492.f419c8","outputs":2,"entityId":"","entityIdFilterType":"exact","property":"","comparator":"gte","value":"99","valueType":"num","timeout":"60","timeoutType":"num","timeoutUnits":"seconds","entityLocation":"","entityLocationType":"none","checkCurrentState":true,"blockInputOverrides":false,"x":530,"y":1260,"wires":[["a56b07af.a59fd8"],[]]},{"id":"9c2fb9f.29d7748","type":"change","z":"33b1225f.3b50ee","name":"Wait","rules":[{"t":"set","p":"payload","pt":"msg","to":"{ \t   \"entity_id\":  \"cover.\" & $flowContext(\"couvre\") & \"_\" &$flowContext(\"piece\"),\t   \"property\":   \"attributes.current_position\"\t}","tot":"jsonata"}],"action":"","property":"","from":"","to":"","reg":false,"x":410,"y":1260,"wires":[["cc6c40f8.9d312"]]},{"id":"d28c9492.f419c8","type":"server","z":"","name":"hassio","legacy":false,"addon":true,"rejectUnauthorizedCerts":true,"ha_boolean":"y|yes|true|on|home|open","connectionDelay":true}]

GV