Starting second workflow from workflow

Script Task, with logging ... 

import com.collibra.dgc.core.api.dto.workflow.StartWorkflowInstancesRequest
import com.collibra.dgc.core.api.model.workflow.WorkflowBusinessItemType

import java.time.Instant
import java.time.format.DateTimeFormatter
import java.time.ZoneId

loggerApi.info("[WFL] your_workflow_name: BEGIN")
currentWFInstanceId = execution.getProcessInstanceId()
loggerApi.info("[WFL] Schedule Get CMDB Class: Current Process Instance Id: ${currentWFInstanceId}"

)long currentDateTime = Instant.now().toEpochMilli()

formattedDateTime = DateTimeFormatter
.ofPattern("EEEE, dd-MMM-yyyy HH:mm:ss")
.withZone(ZoneId.systemDefault())
.format(Instant.ofEpochMilli(currentDateTime))

execution.setVariable("SyncTaskDoc", "Sync requested on " + formattedDateTime)

loggerApi.info("[WFL] your_workflow_name: " + execution.getVariable("SyncTaskDoc"))

workflowDefinitionId = workflowDefinitionApi.getWorkflowDefinitionByProcessId("your_workflow_name_key").getId()
loggerApi.info("[WFL] your_workflow_name: starting new process instance for workflow definition id: " + workflowDefinitionId)

workflowInstanceApi.startWorkflowInstances(StartWorkflowInstancesRequest.builder()
.workflowDefinitionId(workflowDefinitionId)
.build())

loggerApi.info("[WFL] your_workflow_name: END")

@laurenzhiller1​ it is a global workflow (the ootb "Propose New Business Term" workflow). I think the problem is that the start form is not shown when the second process starts and then these inputs are missing in the following steps. The same is with another workflow where I have an exclusive gateway right after the start form and that fails because the variable is missing.

I have removed the form from the Start event and into an own user task. It works now.

But I would still like to show the form in a separate window and not in the task window on the right side of the screen. I have achieved it for one user task, but can't reproduce it. What is the attribute to achieve this?