I can solve this problem for myself.
I create custom policy. bacause I try to obviate the need that adding tag to "shutdown-computevm".
"policyRule": {
"if": {
"allOf": [
{
"not": {
"field": "[concat('tags[', parameters('tagName'), ']')]",
"exists": "false"
}
},
{
"field": "type",
"notEquals": "Microsoft.Devtestlab/schedule"
}
]
},
"then": {
"effect": "deny"
}
}