How to only allowed a single root node being selected, but multiple child selection?

[dreamxyz95]

Hi there, I am rendering my dropdown in this way <treeselect ref="treeselect" v-model="value" :options="options" value-format="object" multiple="true"/>, but for this where multiple root nodes are allowed to be selected. But i want to choose only a single root node at a time with multiple child selection. May i know how can i achieve this?

[TitanFighter]

When root node is selected, disable the rest -> https://vue-treeselect.js.org/#disable-item-selection