diff --git a/omz-custom/custom_commands.sh b/omz-custom/custom_commands.sh
index 88fd976..bc47f89 100755
--- a/omz-custom/custom_commands.sh
+++ b/omz-custom/custom_commands.sh
@@ -403,3 +403,6 @@ function gpla() {
 
     echo "Finished fetching branches."
 }
+
+# source the tmux-sessions.sh in the same folder
+source $(dirname "$0")/tmux-sessions.sh
diff --git a/omz-custom/tmux-sessions.sh b/omz-custom/tmux-sessions.sh
new file mode 100644
index 0000000..78f9738
--- /dev/null
+++ b/omz-custom/tmux-sessions.sh
@@ -0,0 +1,28 @@
+function mux() {
+    project_dir=$1
+    if [[ -z "$project_dir" ]]; then
+        echo "Usage: mux <project_directory> [session_name]"
+        return 1
+    fi
+    session_name=${2:-$(basename $(realpath "$project_dir"))}
+    whole_path=$(realpath "$project_dir")
+    if [[ $whole_path == "*No such file or directory*" ]]; then
+        echo "Directory does not exist: $project_dir"
+        return 1
+    fi
+
+    # check if file doesn't exist yet in the tmuxinator config directory
+    tmuxinator_config=~/.config/tmuxinator/$session_name.yml
+    if [[ -f $tmuxinator_config ]]; then
+        echo "File already exists"
+    else
+        cp ~/.config/tmuxinator/template.yml.temp $tmuxinator_config
+        # replace variables in placeholder config with real values - PROJECT_NAME, PROJECT_ROOT
+        sed -i '' "s|{{\$PROJECT_NAME}}|$session_name|g" $tmuxinator_config
+        sed -i '' "s|{{\$PROJECT_ROOT}}|$whole_path|g" "$tmuxinator_config"
+    fi
+
+    tmuxinator start $session_name
+
+}
+complete -o default mux
diff --git a/tmuxinator/template.yml.temp b/tmuxinator/template.yml.temp
new file mode 100644
index 0000000..5111ddb
--- /dev/null
+++ b/tmuxinator/template.yml.temp
@@ -0,0 +1,10 @@
+---
+name: {{$PROJECT_NAME}}
+project_root: {{$PROJECT_ROOT}}
+windows:
+- zsh:
+    layout: b8f6,198x59,0,0[198x39,0,0,71,198x19,0,40{99x19,0,40,73,98x19,100,40,75}]
+    panes:
+        - nvim
+        -  
+        - dcud