<form [formGroup]="projectForm">
    <mat-form-field>
      <input type="text" matInput placeholder="Project Manager" [formControl]="projectManagerControl" [matAutocomplete]="auto">
      <mat-autocomplete #auto="matAutocomplete">
        <mat-option *ngFor="let employee of filteredEmployees | async" [value]="employee.value.personalInfo.firstName">
          {{ employee.name }}
        </mat-option>
      </mat-autocomplete>
    </mat-form-field>
  </form>
  