diff --git a/.DS_Store b/.DS_Store
index 265d354..b4c4885 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/use case/activation.drawio b/use case/activation.drawio
new file mode 100644
index 0000000..b59a9dc
--- /dev/null
+++ b/use case/activation.drawio	
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diff --git a/use case/book.drawio b/use case/book.drawio
new file mode 100644
index 0000000..d975e28
--- /dev/null
+++ b/use case/book.drawio	
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diff --git a/use case/category.drawio b/use case/category.drawio
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index 0000000..46b5cbe
--- /dev/null
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diff --git a/use case/comment.drawio b/use case/comment.drawio
new file mode 100644
index 0000000..b717cbc
--- /dev/null
+++ b/use case/comment.drawio	
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diff --git a/use case/file.drawio b/use case/file.drawio
new file mode 100644
index 0000000..7071f7d
--- /dev/null
+++ b/use case/file.drawio	
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diff --git a/use case/grade.drawio b/use case/grade.drawio
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diff --git a/use case/off-code.drawio b/use case/off-code.drawio
new file mode 100644
index 0000000..9e03821
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+++ b/use case/off-code.drawio	
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\ No newline at end of file
diff --git a/use case/product.drawio b/use case/product.drawio
new file mode 100644
index 0000000..a8a991c
--- /dev/null
+++ b/use case/product.drawio	
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/use case/qr.drawio b/use case/qr.drawio
new file mode 100644
index 0000000..99fbd01
--- /dev/null
+++ b/use case/qr.drawio	
@@ -0,0 +1 @@
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diff --git a/use case/transport.drawio b/use case/transport.drawio
new file mode 100644
index 0000000..8848753
--- /dev/null
+++ b/use case/transport.drawio	
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/use case/user-factor.drawio b/use case/user-factor.drawio
new file mode 100644
index 0000000..e95b0ec
--- /dev/null
+++ b/use case/user-factor.drawio	
@@ -0,0 +1 @@
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diff --git a/use case/user-product.drawio b/use case/user-product.drawio
new file mode 100644
index 0000000..f386a62
--- /dev/null
+++ b/use case/user-product.drawio	
@@ -0,0 +1 @@
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