diff --git a/README.md b/README.md
index faaa481..1653b6c 100644
--- a/README.md
+++ b/README.md
@@ -38,17 +38,17 @@ research and community of [Web3Privacy Now](https://web3privacy.info).
 | meetup | `prg1` | **2023-11-14** | 🇨🇿 Prague | - | [DCxPrague](https://dcxprague.org/) | Tree | [web](https://lu.ma/w3pm-prg1) |
 | meetup | `ist1` | 2023/Nov | 🇹🇷 Istanbul | - | [Devconnect IST](https://devconnect.org/) | - |  |
 | meetup | `bcn1` | 2024/Q1 | 🇪🇸 Barcelona | - |  | - |  |
-| meetup | `lib1` | 2024/Mar | 🇨🇿 Liberec | - | [ETHBohemia](https://ethbohemia.ethevents.club/) | - |  |
+| meetup | `lib1` | 2024/Mar | 🇨🇿 Liberec | - | [ETHBohemia](https://ethbohemia.ethevents.club/) | Tree |  |
 | meetup | `ams1` | 2024/May | 🇳🇱 Amsterdam | - | [ETHDam 2024](https://www.ethdam.com/) | - |  |
-| meetup | `ber1` | 2024/May | 🇩🇪 Berlin | - | ETHBerlin 5 | - |  |
-| summit | `s2` | 2024/Jun | 🇨🇿 Prague | - | ETHPrague 2024 | - |  |
-| hackathon | `h1` | 2024/Jun | 🇸🇮 Bled | - |  | - |  |
-| meetup | `lju1` | 2024/Jun | 🇸🇮 Ljubljana | - | W3PN Hackathon | - |  |
+| meetup | `ber1` | 2024/May | 🇩🇪 Berlin | - | ETHBerlin 5 | Tree |  |
+| summit | `s2` | 2024/Jun | 🇨🇿 Prague | - | ETHPrague 2024 | Tree |  |
+| hackathon | `h1` | 2024/Jun | 🇸🇮 Bled | - |  | Tree |  |
+| meetup | `lju1` | 2024/Jun | 🇸🇮 Ljubljana | - | W3PN Hackathon | Tree |  |
 | meetup | `bcn2` | 2024/Jul | 🇪🇸 Barcelona | - | ETHBarcelona (?) | - |  |
 | meetup | `bru1` | 2024/Jul | 🇧🇪 Brussels | - | [EthCC 7](https://www.ethcc.io/) | - |  |
-| meetup | `waw1` | 2024/Sep | 🇵🇱 Warsaw | - | ETHWarsaw (?) | - |  |
+| meetup | `waw1` | 2024/Sep | 🇵🇱 Warsaw | - | ETHWarsaw (?) | Tree |  |
 | meetup | `rom2` | 2024/Oct | 🇮🇹 Rome | - | ETHRome 2024 | - |  |
-| summit | `s3` | 2024/Nov | 🇨🇿 Brno | - | ETHBrno 2024 | - |  |
+| summit | `s3` | 2024/Nov | 🇨🇿 Brno | - | ETHBrno 2024 | Tree |  |
 | meetup | `dvc1` | 2024/Q4 | 🏴‍☠️ SE Asia | - | [Devcon 7](https://devcon.org/) | - |  |
 
 [Source file](./events/events.yaml)
diff --git a/events/events.yaml b/events/events.yaml
index 426196f..ea2bbe8 100644
--- a/events/events.yaml
+++ b/events/events.yaml
@@ -51,6 +51,7 @@
   city: Liberec
   country: cz
   coincidence: "[ETHBohemia](https://ethbohemia.ethevents.club/)"
+  lead: Tree
 
 - id: w3pm-ams1
   type: meetup
@@ -67,6 +68,7 @@
   country: de
   # ETHBerlin 5 - May 24-26, 2024
   coincidence: "ETHBerlin 5"
+  lead: Tree
 
 - id: w3ps2
   type: summit
@@ -74,6 +76,7 @@
   city: Prague
   country: cz
   coincidence: "ETHPrague 2024"
+  lead: Tree
 
 - id: w3ph1
   type: hackathon
@@ -81,6 +84,7 @@
   city: Bled
   country: si
   coincidence: ""
+  lead: Tree
 
 - id: w3pm-lju1
   type: meetup
@@ -88,6 +92,7 @@
   city: Ljubljana
   country: si
   coincidence: "W3PN Hackathon"
+  lead: Tree
 
 - id: w3pm-bcn2
   type: meetup
@@ -109,6 +114,7 @@
   city: Warsaw
   country: pl
   coincidence: "ETHWarsaw (?)"
+  lead: Tree
 
 - id: w3pm-rom2
   type: meetup
@@ -123,6 +129,7 @@
   city: Brno
   country: cz
   coincidence: "ETHBrno 2024"
+  lead: Tree
 
 - id: w3pm-dvc1
   type: meetup