argos/dmp-frontend/src/app/form/dynamic-form-section/dynamic-form-section.html

<div class="panel-group" style="margin-top:10px;">
    <mat-accordion>
        <mat-expansion-panel expanded=true>
            <mat-expansion-panel-header>
                <mat-panel-title>
                    {{path}} {{section.title}}
                </mat-panel-title>
                <mat-panel-description>
                    <h3 *ngIf="section.description">{{section.description}}</h3>
                    <!-- <h4 *ngIf="section.extendedDescription">{{section.extendedDescription}}</h4> -->
                </mat-panel-description>
            </mat-expansion-panel-header>

            <div *ngFor="let compositeField of section.compositeFields; let i = index; trackBy: trackByFn">
                <div>
                    <div *ngIf="(compositeField?.multiplicity?.max - 1) > (compositeField?.multiplicityItems?.length)">
                        <a (click)="addMultipleField(i)" style="cursor: pointer">
                            Add one more fieldset +
                        </a>
                    </div>
                    <df-composite-field [compositeField]="compositeField" [path]="path" [pathName]="pathName+'.compositeFields.'+i"></df-composite-field>
                    <div *ngFor="let multipleCompositeField of compositeField.multiplicityItems; let j = index; trackBy: trackByFn">
                        <df-composite-field [compositeField]="multipleCompositeField"
                            [pathName]="pathName+'.compositeFields.'+i+'.multiplicityItems.'+j"></df-composite-field>
                    </div>
                    <div *ngIf="compositeField.hasCommentField" [formGroup]="form.get('compositeFields').get(''+i)">
                        <mat-form-field>
                            <input matInput formControlName="commentFieldValue" placeholder="comment">
                        </mat-form-field>
                    </div>
                </div>

            </div>

            <div *ngIf="section.sections">
                <div *ngFor="let itemsection of section.sections; let j = index;">
                    <df-section [section]="itemsection" [path]="path+'.'+(j+1)" [pathName]="pathName+'.sections.'+j"></df-section>
                </div>
            </div>
        </mat-expansion-panel>
    </mat-accordion>
</div>