GG5, etc.

I think it's quite clear when kept a bit simpler.

@@ -18 +17,0 @@
-<xref type="see" seq="2858814">不法占拠</xref>
@@ -20,2 +19,2 @@
-<gloss>occupation (e.g. of a park, of a building)</gloss>
-<gloss g_type="expl">taking and maintaining exclusive control (of a location)</gloss>
+<gloss>occupation</gloss>
+<gloss>taking and maintaining exclusive control (of a location)</gloss>

sankoku: その場所を自分のものにして、他人を寄せつけないこと。「建物をーする」

daijs also xrefs 不法占拠, and gives an entire sense to 占領

１ ある場所を占有して他人を寄せつけないこと。「公園を占拠する」「不法占拠」
２ 占領すること。「敵の要地を占拠する」

米議会占拠 Occupation of the U.S. Capital/Congress
ウォール街占拠運動 Occupy WallStreet

2023 ‧ Drama television series:
Captured Hospital (大病院占拠)

Started the day 占領 and "occupation". It's already been acknowledged that "occupation" has ambiguity issues in English.  

This one seems particularly apt for non-military contexts, but ("e.g. territory") kind of pointed back to military use. Sankoku specifically cites buildings, daijs does as well and refs 不法占拠.  Daijs also gives a second sense just for 占領[2], which sankoku omits.  

Adding the xref at least makes it clear that this is *not* military occupation(at least, not necessarily).  

"exclusive possession" seems to me to be more of an [expl] than a gloss. I've tried to flesh this out a bit.

News examples include Russian occupation of Ukrainian power generation facilities, a funeral procession in Tokyo occupying 100 meters of road, a mountain of recycling materials figuratively "occupying" (using quotes 「」) a waste management fascility, and a Pokemon takeover during a parade:
ポケモンがみなとみらい占拠　ゲーム世界大会合わせ100匹パレード
https://www.tokyo-np.co.jp/article/270194

@@ -18,2 +18,4 @@
-<gloss>occupation (e.g. of territory)</gloss>
-<gloss>exclusive possession</gloss>
+<xref type="see" seq="2858814">不法占拠</xref>
+<xref type="see" seq="1389610">占領・2</xref>
+<gloss>occupation (e.g. of a park, of a building)</gloss>
+<gloss g_type="expl">taking and maintaining exclusive control (of a location)</gloss>

Meikyo vt and vi additions to n,vs entries
-*- via bulkupd.py -*-

@@ -16,0 +17 @@
+<pos>&vt;</pos>

GG5, etc.

Making clear it's not employment.

@@ -17,1 +17,2 @@
-<gloss>occupation</gloss>
+<gloss>occupation (e.g. of territory)</gloss>
+<gloss>exclusive possession</gloss>