画布添加功能和选择节点变为选中后就可以添加，添加逻辑和生成多张逻辑一致，

src/components/Canvas/FlowCanvas/manager/NodeManager.ts

@@ -45,24 +45,27 @@ export class NodeManager {
 	/** 创建节点 */
 	createNode(options: NodeOptions) {
 		const superiorID = options?.data?.superiorID
-		const snode = superiorID ? this.stateManager.flowManager.getNodeById(superiorID) : this.stateManager.flowManager.getLastNode();
 		//获取上级节点所生成的最后一个node，设置位置为最后一个节点的xy 加上 节点间距
 		const superiorGenerateNodes = this.stateManager.getSubordNodes(superiorID)
+		const currentNode = superiorGenerateNodes.find((node) => {
+			return node.data.createIndexPosition === options?.data?.createIndexPosition
+		})
 		const endGenerateNode = superiorGenerateNodes.reduce((max, current) => {
 			return current.data.createIndexPosition > max.data.createIndexPosition ? current : max
 		}, superiorGenerateNodes[0])
+		const snode = superiorID ? this.stateManager.flowManager.getNodeById(superiorID) : this.stateManager.flowManager.getLastNode();
 		const id = options.id || createId()
 		const positionX = options.positionX || 0
 		const positionY = options.positionY || 0
 		const position = options.position ||
 			(
-				endGenerateNode?
+				currentNode ?
+				currentNode.position :
+				endGenerateNode ?
 				{
 					x: endGenerateNode.position.x + positionX,
 					y: endGenerateNode.position.y + positionY + this.ranksep + 200
 				} :
-				!snode ?
-				{ x: positionX, y: positionY } :
 				{
 					x: snode.position.x + snode.dimensions.width + this.nodesep + positionX,
 					y: snode.position.y + positionY
@@ -103,6 +106,7 @@ export class NodeManager {
 			data: {
 				tier: NODE_DATATIER.CARDS_SELECT,
 				type: NODE_DATATYPE.CARDS_SELECT,
+				createIndexPosition: options?.data?.createIndexPosition || 1,
 				...(options?.data || {}),
 			},
 		}
@@ -113,7 +117,7 @@ export class NodeManager {
 		const options_ = {
 			...(options ? options : {}),
 			component: NODE_COMPONENT.CARD,
-			data: {
+				data: {
 				...(options?.data || {}),
 			}
 		}